Aluminum M3/4/5/6 Knurled Thumb Nuts with Collar Blind Hole Hand Grip Knob Nuts
Thumb Nuts are designed to be tightened and loosened by hand. The thumb nut has a diamond knurled surface on its head. This gives it better gripping surface, making it easier to tighten or loosen the fastener manually.
4-40 6-32 UNC Aluminum Knurled Thumb Nuts with Collar Hand Knob Nuts Blind Hole
Aluminum M5 M6 Knurled Thumb Nuts Blind Hole High Head Hand Grip Knob Nuts D20
M5 M6 Knurled Thumb Nuts High Type Hand Grip Knob Nuts Blind Hole D20. Thumb Nuts are designed to be tightened and loosened by hand. The thumb nut has a diamond knurled surface on its head. This gives it better gripping surface, making it easier to tighten or loosen the fastener manually.